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| author | Natanael Copa <ncopa@alpinelinux.org> | 2016-05-25 11:22:13 +0200 |
|---|---|---|
| committer | Rich Felker <dalias@aerifal.cx> | 2016-06-29 11:57:53 -0400 |
| commit | 04bced403dead13d20a46a1bd00ab1eb2c50b882 (patch) | |
| tree | 1f25de60512f672369ea219c98978742d634dd34 /src | |
| parent | 5c43e1dbc8716536551d392f834c6752a3e82cec (diff) | |
| download | musl-04bced403dead13d20a46a1bd00ab1eb2c50b882.tar.gz | |
in performing dns lookups, check result from res_mkquery
don't send a query that may be malformed.
Diffstat (limited to 'src')
| -rw-r--r-- | src/network/lookup_name.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/network/lookup_name.c b/src/network/lookup_name.c index 86f90ac1..d3d97b48 100644 --- a/src/network/lookup_name.c +++ b/src/network/lookup_name.c @@ -145,11 +145,15 @@ static int name_from_dns(struct address buf[static MAXADDRS], char canon[static if (family != AF_INET6) { qlens[nq] = __res_mkquery(0, name, 1, RR_A, 0, 0, 0, qbuf[nq], sizeof *qbuf); + if (qlens[nq] == -1) + return EAI_NONAME; nq++; } if (family != AF_INET) { qlens[nq] = __res_mkquery(0, name, 1, RR_AAAA, 0, 0, 0, qbuf[nq], sizeof *qbuf); + if (qlens[nq] == -1) + return EAI_NONAME; nq++; } |